Rounding-machine.



A. R. SCHOENKY.

ROUNDING MACHINE. 7

APPLICATION FILED JUNE 2. 191a.

Patented Oct. 16,1917.

4-SHEETSSHEET 1.

I ll oveww b;

A. R. SCHOENKY; ROUND ING MACHINE.

APPLICATION FILED JUNE 2. 191a.

mama,

Patented Oct. 16,1917.

4 SHEETS-SHEET 2.

AZ aver czar, @usfiflfi'zfio A. R. SCHOENKY.

ROUNDING MACHINE. APPLICATION man man. ms.

4' SHEETSSHEET 3.

Patented Oct. 16, 1917.

A. 'R. SCHOENKY.

nouuoms MACHINE. APPLICATION FILED IUNEZ, 9H5. 77 1,243,228. PatentedOct. 16,1917.

4 SHEETSSHEET 4.

7 AUGUST R. SCI-IOENKY, OF SOMERVILLE, .MASSAGI-IUSETTS, ASSIGNOR T0REEGE SHOE MACHINERY COMPANY, OF BOSTON, MASSACHUSEETS, A CORPORATION OFMAINE.

RO U NDIN'G-MACHINE.

Specification of Letters Patent.

Patented Oct. 16, 1917.

Application filed June "2, 1916. Serial no. 101,628.

To all whom it may concern:

Be it known that I, Aucusr R. Sononn KY, a citizen of the United Statesof America, and a resident of Somerville, in the county of Middlesex andCommonwealth of Massachusetts, have invented certain new and usefulImprovements, in Rouriding-Machines, of which the followingis aspecification.

This invention relates to rounding machines for rounding or trimming theedges of boot or shoe soles preparatory to the final sole stitchingoperation thereon.

In the manufacture of boots and shoes, particularly those wherein a weltis used, the outsole is temporarily attached to the insole and welt inusual or well-known manner, and thereafter, while the last is still inthe shoe, is presented to the rounding or trimming machine forthesocalled rough rounding operation.

This operationhasbeen accomplished gen-' erally by feeding the work infront of a,

rapidly oscillating trimming knife, and has at times been accompanied byan outsole channeling as well as a welt gutterin'g operation.

Heretofore, the work clamp and feed and the parts carried or influencedthereby, have been actuated directly, or indirectly, by or through camsor levers. The object of this invention is'to provide rounding machinethat is cheap,

simple in construction, li ght running and capable of high speed withoutthe use of a multiplicity of noisy, jar and wear producing cams and camoperatedlevers.- Another object of the inventionis to produce a feedingmechanism, one element of which is a four motion device having some ofits motions imparted to link and lever connections with a main shaft,while other of its motions are imparted to it by means of a camcontrolled lever of extremely slight movement.

Another object of the invention is to supply a rounding machine withanoutside channeling, and a weltguttering tool, both actuated orinfluenced 1n their action directly or indirectly by means of link andlover connections to them or cooperating devices, and the crankshaft.

I-E'erein' the trimming knife, the-work 1 and s etsj sft l that arecarried. 9

cam controlledit by means of flue-need in their action by the saidfeeding devices, are actuated from a rotating crank shaft by or through,directly or indirectly, link and lever connections between them orcooperating devices, and the said crank shaft.

It isa well-known fact that in the use of link motions, ease and harmonyof action are obtained, combined with the elimination of noise and unduewear.

These features are very essential in this class of machine where highspeed is re-' quired, and they are, therefore, objects of thepresentinvention.

For thep-urpose of illustratingthe invention, one preferred form thereofis illus trated in the drawings, this form having been found to givesatisfactory and reliable results, although it is to be understood thatthe-various instrumentalities of which the invention consists can bevariously arranged and organized,- and that the invention is not limitedto the precisearrangement and orherein shown and described.

Of the drawings: V

Figure 1 represents a front elevation of a well-known type of roundingmachine to which thepresent invention is applied.

Fig. 2 represents a left side elevation thereof, some ofthe parts beingshown in dotted lines, others omitted for clearness.

F ig.. 3 represents a top plan view of Fig. 1. 1

Fig. 4 represents asection on the line 4+4, Fig. 3, some of the partsbeing omit-ted.

Fig. 5 represents a section through an unfinished shoe, showing theoperations'rcquired at the sole edge thereof. 7

F ig. 6 represents a top plan view similar to Fig. 3, some of the partsbeing broken out to show parts of the feeding mechanism and actuatinglinks therefor.

Fig. 7 represents a section on the line 77, F ig. 6, including some ofthe parts not shown in Fig. 6, and omitting others;

Fig. 8 represents a left side elevation similar to Fig. 2, with the sideframe removed, and certain other parts, omitted or broken away to moreclearly-show the crank and some of the link and lever connections thatactuate the feed devices.

Fig. 9 represents a part section, on the line fi -9, Fig. 8, showing thefeed crank and some of its link and lever attachments.

that are well-known in this type of machine,

and for which reference maybe hadto a prior Patent #1940333, datedOctober 8, 1912. r I

Other of the devices, though not newin themselves, will be more fullydescribed, together with their new and novel actuating means. V

As in the above-mentioned patent, the column a having the flanged top ais of suitable shape and construction as to be prefer? ably securedtothe floor and adapted to carry the working parts to be described aswell as the necessary levers or pedalsfnot shown, to operate said parts.

The side frames A A suitably secured to the flanged top a are providedwith bearings for the several shafts or studs to be described.

' The rotatable work rest B, which cooperates with the front Work feedand clamping member D to clamp and feed the work, the oscillating knifeC, the crease guide E and the last guide F, together withthe channelknife H and the guttering tool G are or may be as shown and described insaid prior patent. These devices will not be further described at thistime, description is necessary to enable this invention to beunderstood.

Viewing Fig, 5, the operations to be performed upon the edge of theoutsole and the co-extending welt will be understood. The trimming knife0 in its rapid oscillation is adapted to trim or round the outsole atapproximately the tance from the last contained shoe X, ac-

rounded, and the requirements thereof. Simultaneously and progressivelytherewith, the channeling or lip trimming knife H and the guttering toolG are adapted to perform 72 forming part of the upright bar 6 which inturn is carried by the spring pressed slide bar 6 the said bar 6' beingslidably retained in its forward position shown. in the drawings bymeans of the spring 6 adjust able as to compression by means of thescrews 6 i groove of a cam 21 fast on and only when such line w agreater or less dis;

cording to the part of the shoe sole being The operations to beperformed, and

.tively short straight link Upwardly extending from the flanged top a isthe pivot stud 10 about which is adapted to swing the arm 11, its rightend being embraced by the slide bar I), gasuitable guideway beingprovided-thereon for said bar.

The hub 12 of the arm 11 is provided with a flange 13 to which isadjustably secured the arm 14:, saidarm loosely embracing the stud 10and having rearwardly extending lugs 15 threaded to receive theadjusting screws 16.

Swiveled in the flange 13 is a square headed stud 17 against oppositesides of which the adjusting screws 16 are adapted to be set. r

.Pivotedto the forward end of the arm 1 1 is a link 18 its right endbeing in turn pivoted to a split collar 19 surrounding the grooved hub(Z of a bell crank lever (Z said lever (Z having a rearwardly extendingarm (Z provided with a roller 20 engaging the the shaft WV, said grooveand roller being of sufficient depth and lengthas to permit of relativelateral movement during without becoming disengaged.

The depending arm of the has fast therewith a plate or work rest D bymeans of screws al -(Z said plate D being movable toward and from thework rest B to effect clamping and unclamping of the work positionedtherebetweenQ as well as being movable laterally with said rest B toeffect the feeding operation. 1

This last mentioned lateral movement of hell crank (Z the feedingoperation 1 ice the work rests and the mechanism to obtain 3 link 23 inturn pivoted at '24: to the side frame A the'link's 22- 23 forming atoggle. The joint or breaking point of the toggle has pivotallyconnected thereto a compound link 25, connected to a lever 26 fast onthe rock shaft 27 '(se'e Figs. l6). Fast on said shaft 27 (see Fig. 3)and forwardly extending therefrom is the lever 28 to which is pivotallyconnected the toggle composed of the rela- 29 and the longer curved link30, said link 30 being'suitably swung about astud 31 extending from theside frame A The toggle joint 32 is loosely connected to the pitman 33the upper end of which loosely surrounds the'crank pin 3 1 of the shaftW (see Figs. 8, 9, 10, ,11, and 12).

It will thus be seen that rotation of the shaft WV through the links andlevers just described will transform the rotary motion to a horizontalreciprocatory motion which will be imparted to the work rests B and D.it being possible with thisv construction and arrangement of links andlevers to Obtain work rest B-has pivoted I a 7195 link 22, its other endbeing pivoted to the itsrear end being pivotally the necessary rapidaction of the feeding devices to feed, and return, and at the same timeat the end of each movement, to arrest the rapidity of movement of thesaid rests B and D to cause them to become quiescent, or practically sothrough several degrees of rotation of the crank pin 34 (see Fig. 12),this arrest of movement of the rests B and D enabling the cam controlledbell crank lever (Z to perform the clamping and unclamping action of theplate D.

As will be seen viewing Fig. 12, this arrangement also insures a morerapid return of the feeding devices to their starting position than isimparted to them during the feeding movement thereof.

Since the work rest roll B is normally pressed forward in the positionshown in the drawings, it is necessary to provide means to retract thesaid rest B and-its slide 7) in order that work may be inserted orplaced between the said rest B and the Work rest and clamp plate D. Tothis end a rock shaft 6 (see Figs. 1, 6, and 7) has at its inner endfast thereto a depending arm I) having a lug b projecting therefromadapted to engage a lug b of the slide bar Z). Forwardly extending fromthe shaft 6 and fast therewith is a lever 6 adapted to be connected by arod or chain to a pedal not shown.

It will be readily understood that by depressing the lever 6 the workrest B will be retracted sufiiciently to permit theoperator to insertthe work between said rests B and D. In order to properly guide the workduring its passage before the cutter C a crease guide E is provided inthe form of a U-shaped member (Figs. 1, 2, a'nd'8) said member beingadjustably secured to the ends of a pivoted upwardly spring pressedlever e, bythe screws 6 the spring '6 normally holding the free end ofsaid lever e in con tact with a shoulder d formed on the de pending armof the bell crank lever d as in said prior patent, and'the crease guideE being centrally cut awayto accommodate the plate D, previouslyreferred to, as well as to permit the guttering tool Gr to have accessto the work at certain times.

It will be understood that the crease guide E when the clamp plate D isreleased therefrom, and so serves until the work is again clamped andfed; indicated at G is a flexible Y-sha-ped evice secured to the creaseguide E by the screws 6/, and by means of its spring like flexibility,is a'da-ptedto be placed into and out of operative relation to the workby means of a last or fore part guide F.

In the rounding operation of shoesoles it is desirable to round or trimthe sole closer to the upper, or last, at the shank of the shoe t n i isa th or p t of the shoe.

with the shoe.

serves as a stationary rest for the work The welt gutteri'n tool' Toaccomplish this result two guide members are generally used.

In this instance, the crease guide E is used exclusively when the shankof the shoe sOle is being rounded, and when the fore part is beingoperated upon a last or a fore part guide F is brought into action, thesaid guide F being a spring pressed member pivoted to the end of a leverswing about the shaft 7, the spring normally holding the guide F out ofoperative position, as shown in Figs. 1 and 2.

To lower the last or fore part guide into its operative position, a rod35 is attached to to the lever f and extends therefrom to the floor,where it is adapted to be connected to a suitable treadle not shown.Downward movement of the rod 35 carries with it the arm f and attachedguide F into contact as shown in Fig. 8 of the drawings.

The downward movement of the guide F is limited by the curved upstandingextension f of the lever 7, having a stud or luglike portion 7 extendingtherefrom adapted to engage the sleeve 7" surrounding the shaft W It isobvious that when the treadle is released the spring 7 will return theguide F to its former position. Viewing Figs. 1, 2, and 8, the rolls 36will be seen journaled in the plate 7 and in such position relatively tothe guttering tool G that upon the descent of the guide F to" itsoperative position the rolls 36 will force it into position tooperation.

The groove or gutter formed by the tool G in the top side of the welt isfor the purpose of allowing thestitches, to be subsequently made duringthe outsole attaching operation, to be drawn into the welt below thesurface thereof, thereby giving a neater appearance to the finishedshoe. As the stitching does not show plainly at the shank of the shoe,it is not deemed expedient or necessary to gutter the welt at thatplace, hence the control of the guttering tool G is left to the lastguide F, as the said guide for the best results must be used to guidethe shoe when rounding the fore part. As the guide F contacts with theshoe, it will force the shoe slightly downward a predetermined amount,thereby widening the margin of the outsole and Welt to be trimmed aroundthe fore part. 7

The lip forming or channeling knife H, previously referred to, isattached to the front edge of the plate 6 and adapted to be raisedslightly simultaneously with the lowperform its proper ering of the shoewhen forced downwardly by the guide .F, this actionserving to bring 7adapted to contact with the tool G andthe channel or lip, closer to theedge of the l shoe, as determined by the cutter C.

Pivotedto the slide bar 6 at 6 is a rearwardly extending lover I).Interposed between the fore part guide carrying lever f and the saidlever Z2 is a link 6 having round heads at either end and adapted to beadjustably seated in sockets provided in the levers j and I) a spring 6tending to hold the two levers together. In practice the pivot 6 for thearm 6 is a rock shaft and has fast upon it a toothed segment (not shown)which engages teeth out in the back of the upright bar 6 said bar 6being guidedin suitable ways in the end I) of the slide bar If.

Raising or lowering the guide F out of or into operative positioneffects the relative operative position of the channeling tool H.through the medium of the devices above described.

Assuming that the clamping and feeding devices are in position toreceive the work,

the said position would be slightly to the right of that shown in Fig. 1of the drawing. The work rest B vis now rearwardly pressed by rockingthe shaft 6 and the work is thereafter inserted between the roll B andthe crease guide E, the work being forced upwardly to insure a goodguiding contact for the crease guide E between the top side of the weltand the shoe form. The machine will now start its operations upon theshoe, and the'cam 21, acting through the bell crank (Z will immediatelybring the work clamp and feed member D into clamp ing position,

The work clamp and feed member D which depends upon its lateral movementis adjusted to its proper relative position by means of the screws 16and secured in said adjusted position by the bolts 37. The holes in thearm 14 through which the said bolts pass are of such size as to permitof said adjustment. This adjustment of making the clamping and feedingparts with any great degree of precision or extreme accuracy of setting.The shoe having been clamped between thework rests, the feeding andcutting operations now commence. As previously explained, the crank pin84 through its several link and lever connections, moves the feedingdevices and the work clamped therein from the starting position towardthe left of Fig. 1 a predetermined distance, somewhat less than thewidth of the rounding or trimming knife C. For each feeding movement ofthe work, the cutter C is given a cutting stroke, the knife C beingmounted at the free end of an oscillating arm 0, which has pivotallyconnected therewith the upper end 0 of which loosely surrounds the crankpin 0 of the shaft- W.

AS before'ex lained, the feeding devices lmpinging the work between itand the yieldingly mounted work rest B.

the arms 1& and 11 for is one that obviates the necessity near the endof their feeding movement are arrested, ample time being allowed for thecutter C to perform its function and for the cam'21 to operate tounclamp the work prior roll 13 is revoluble and the clamping mem ber 'Dis not now in contact with the work which is held stationary by'thevertical knife, the return movement of these devices is made easily, andrelatively faster than the feeding movement thereof. During the returnmovement the channeling or lip cutting operation takes place. As therounding of the shoe is started at the shank, the above described cycleof operation will continue until the fore partof the shoe is reached,whereupon the-operator will vcause the last or fore part guide F todescend to guide the shoe during the round ing of that portion of theshoe.

The descent'of the guide F having also put the guttering tool G intooperative position, it willbe readily understood that subsequent feedingoperations of the work will cause the guttering tool Gr to perform itsfunction simultaneously with the feeding operationy hen the fore parthas been rounded and the shank on the opposite side of the shoe held bythe roll B against the crease guide E and since the is to be finished,the fore part guide is allowed to assume its former position, as shownin Figs. 1 and2, and automatically therewith the guttering tool G willspring out of operative cont-act with the worln It is believed that theoperation and many advantages of this invention will be fully understoodfrom the foregoing description.

Having thus described my invention, I claimr thereon; wo k clamp feedingdevices; a work guide; carriers for said feeding devices; link and leverconnections between said crank and said carriers adapted to move saidcarriers in unison in opposite directions.

2. In a rounding-machine of the class 3; In a rounding machine of theclass described, in'combination, a shaft; a crank thereon; a clampfeeding device; a cutting tool movable with said device; a work guide;

I 1. In a rounding machine of the class described, in combination, ashaft; a crank carriers for said device adapted to move in unison; andlink and lever connections between said crank and said carriers adaptedto move said carriers in opposite directions.

4. In a rounding machine of the class described, in combination, ashaft; a crank thereon; clamp feeding devices adapted to move inrectilinear paths when clamped; carriers therefor adapted to move inunison; and link and lever connections between said crank and saidcarriers so arranged as toimpart oscillatory movements to said carriers.

5. In a rounding machine of the class described, in combination, ashaft; a crank thereon; clamp feeding devices arranged to be moved inrectilinear paths when clamped; carriers therefor arranged to oscillatein paths perpendicular to each other; and link and lever connectionsbetween said crank and said carriers adapted to oscillate said carriersin said paths.

6. In a device of the class described, a drive shaft, a vibrating workfeeding memher, a cutting tool mounted thereon, and link and lever crankconnections between the said drive shaft and said member adapted to feedthe work in one direction of its movement, at one speed, and to operatethe cutting tool in the other direction of its movement at a differentspeed. i

7. In a device of the class described, a drive shaft, a work feedingdevice, a guttering tool, means to move said guttering tool into and outof operative position, and link and lever connections between said driveshaft and said feeding device.

8. In a device of the class described, in combination, a drive shaft, awork feeding device, a cutting tool mounted thereon, a guttering tool,and link and lever connections between said drive shaft and said workfeeding device.

9. In a device of the class described, in combination, a drive shaft, acrank thereon, a two-part work feeding device, means to effect relativeadjustment between said parts of said feeding device, and link and leverconnections between said crank and said feeding device.

10. In a rounding machine of the class de scribed, in combination, arotating shaft; acrank thereon; combined work clamp and feeding devices;carriers for said devices; link and lever connections between said crankand said carriers adapted to move said carriers and said clamp feedingdevices to feed the work; and automatic means independent of said linkand lever connections to cause said clamp device to clamp prior tofeeding.

11. In a rounding machine of the class described, in combination, ashaft; a crank thereon; a two-part work clamp feeding device arranged tomove in a rectilinear path when clamped; carriers for said devicearranged to move in unison, one of which moves in'a curved path and theother in a straight path; and link and lever connections between saidcrank and said carriers adapted to move said carriers in theirrespective paths.

12. In a device of the class described, in combination, a shaft, a crankthereon, a rocking member, link-connections between said crank and saidrocking member, a two-part Work clamp feeding deviceadapted to move withthe work in one direction, and link connections between said rockingmember and said feeding device arranged to move said device in arectilinear path when clamped adapted to move said feeding device in acurved path.

13. In a device of the class described, in combination, a rotatingshaft, a crank there on, a rock shaft, a two-part work clamp feedingdevice, means to operate said feeding device from said rock shaft in'arectilinear path when clamped, and link and lever connections betweensaid crank and said rock shaft.

14. In a device of the class described, a rotating shaft, a crankthereon, a rock shaft, a lever thereon, a pitman connected to saidcrank, and a toggle interposed between said pitman and said rock shaft,a work feeding device, and means to actuate said feeding device fromsaid rock shaft.

15. In a rounding machine of the classdescribed, in combination, ashaft; a crank thereon; a rock shaft; means intermediate said crank androck shaft to operate said rock shaft; a movable work support; a cutting tool mounted thereon; a work guide; a clamp member movable withsaid Work support; carriers for said support and clamp member; a leveron said rock shaft; and link connections between said carriers and saidlever.

16. in a device of the class described, in combination, a crank shaft, arock shaft, levers thereon, pitman and toggle connection between saidcrank shaft and one of said levers, a work feeding device, and link andtoggle connections between the other of said levers and said workfeeding device.

17. In a device of the class described, a shaft, cranks thereon, anoscillating trimming knife operated from one of said cranks, a workfeeding device adapted to act in timed relation with the said trimmingknife, means carried by said work feeding device to clamp the work, andlink, lever and toggle connections between another of said cranks andsaid work feeding device.

18. In a device of the class described, an operating shaft; an actuatormovable therewith; a rocking member; link and lever connections betweensaid actuator and said rocking member, so constructed and arranged as tomove said rocking member faster in one direction than in the other, andto vcause the stoppage of said rocking member at the ends of itsmovements during certain degrees of rotation of the operating shaft;work feeding devices; and means to operate said feeding devices fromsaid rocking member. a

19. In a device of the class described, a shaft; a crank thereon; a rockshaft; link and lever connections between said crank and said rock shaftso arranged as to neutralize the effective action of said rock shaftduring certain degrees of rotation of the first mentioned shaft; workclamp feeding devices; and means to operate said feeding devices fromsaid rock shaft.

In a device of the class described, a shaft; a crank thereon; a rockshaft; a lever thereon; link connections between said crank and saidlever adapted to move said lever in opposite directions; a membercoacting with said link connections adapted to con- Copies of thispatent may be obtained for .trol the effective action of saidconnections tions between said rock shaft and said feeding devices.

21. In a rounding machine of the class described, in combination, ashaft; a. crank thereon; a work guide; work clamp-feeding devices; andlink and lever connections between said crank and said feeding devicesadapted to operate said devices to intermittently feed the work.

22. In a rounding machine of the class described, in combination, ashaft; a crank thereon; a work guide; a work rest; a channeling toolmounted thereon; and link and lever connections between said crank andsaid work rest adapted to move said work rest in opposite directions.

Signed by me at Boston, Mass, this 31st day of May, 1916.

' AUGUST R. SCHOENKY.

five cents each, by addressing the Commissioner of Patents,

Washington, .D. G.

